Patents by Inventor Joseph Hoppe

Joseph Hoppe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Security between electronic components of a portable secured electronic unit
    Patent number: 9262649
    Abstract: A portable secured electronic unit includes at least two electronic components, one of which is embodied in the form of a primary electronic component and the second in the form of an interface electronic component, wherein the two electronic components are interconnected by communication elements and at least one electronic component includes security elements for securing the communication thereof the other electronic component.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: February 16, 2016
    Assignee: OBERTHUR TECHNOLOGIES
    Inventors: Marc Bertin, Joseph Hoppe
  • Security Between Electronic Components of a Portable Secured Electronic Unit
    Publication number: 20080289003
    Abstract: A portable secured electronic unit includes at least two electronic components, one of which is embodied in the form of a primary electronic component and the second in the form of an interface electronic component, wherein the two electronic components are interconnected by communication elements and at least one electronic component includes security elements for securing the communication thereof the other electronic component.
    Type: Application
    Filed: November 7, 2006
    Publication date: November 20, 2008
    Applicant: OBERTHUR TECHNOLOGIES
    Inventors: Marc Bertin, Joseph Hoppe
  • Device for implementing a message signature system and chip card comprising such a device
    Patent number: 5748782
    Abstract: This provides a first device for implementing an RSA-type protected data exchange system for the signing of messages and the verification of the signed messages, and a second device for inhibiting the encryption anti decryption functions inherent of such systems so as to authorize only the signature and signature functions and public key authentication.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: May 5, 1998
    Assignee: De La Rue Cartes Et Systems SAS
    Inventors: Ronald Ferreira, Joseph Hoppe
  • Device for protecting the validity of time sensitive information
    Patent number: 5489095
    Abstract: The clock circuit is formed by an oscillator (10-12) which is coupled to a counter/divider circuit (15) provided with read accesses (30). In order to prevent falsification of its data, the circuit is formed as a protected casing and includes a protected access circuit (50) which is connected between said accesses and the counter/divider circuit. Furthermore, a circuit for monitoring the frequency of the oscillator may be provided (100-50).
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: February 6, 1996
    Assignee: U.S. Philips Corporation
    Inventors: Jean-Louis Goudard, Denis Pottier, Joseph Hoppe
  • Method of generating a unique number for a smart card and its use for the cooperation of the card with a host system
    Patent number: 5068894
    Abstract: A smart card (1) which includes a random access memory RAM (10) and a read-only memory PROM (7) incorporating a production key (PK), a distributor key (MK), a bearer code (CP) and a serial number (NS) generates a unique number (NU) which is stored in the memory RAM (10) in the card after execution of the following steps of a program which is specific of the card:a - modulo-2 addition and storage in the RAM (10) of the result:PK.sym.MK=KMP,b - the encryption of a unique input message ME, generated by the card, by means of a reversible algorithm (ALG, ALB.sup.-1) using the key KMP:NU=ALG.sub.KMP (ME).
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: November 26, 1991
    Assignee: U.S. Philips Corp.
    Inventor: Joseph Hoppe